. >> piece a highly touted class on artificial intelligence at ucs berkeley, but you can take it for free on the worldwide web. >> he got a job with a palo alto on-line advertising company after he completed six on-line courses in five months. >> thinking about it is that no one really pays too much attention to credentials and people are interested in what you know and what you can do. >> it's like coming out west in the gold era. >> reporter: professor dublin, who tempes an intro to math class at stanford, which is also available free on-line, says this is unchartered territory. >> i have student as young as 14 and into their 80s. >> reporter: they are called massive open on-line course and at stanford three moocs were offered this. >> hanna isn't sure how she feels about people getting for free what she pays top dollar for. >> a little frustrating since i'm paying so much. >> reporter: these are some of the companies that offer classes. tamir says audis saved him about $15,000. >> i might have taken aboutia year to get something comparable. >> reporter: professor dublin says these